Problem 19 · 2018 Math Kangaroo
Hard
Spatial & Visual Reasoning
sequence-of-figurespath-tracing
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Answer: A
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Hint 1 of 2
At each whistle every ladybird that can move shifts one cell (up/down/left/right) and the three stuck ones stay put.
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Hint 2 of 2
Carry the positions forward whistle by whistle to the fourth step and match the resulting picture.
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Approach: step the configuration forward four whistles
- On each whistle the movable ladybirds each step one cell while three never move.
- The three given snapshots establish how each ladybird is travelling.
- Advancing one more whistle (the fourth) gives the arrangement in choice A.
Mark:
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